Matching a child restraint to the ISOFIX positions in the vehicle
- 5-door

IUF = Suitable for forward-facing ISOFIX child restraint systems of the universal category approved for use in this weight group.
X = ISOFIX position not suitable for the ISOFIX child restraint in this weight group and/or this size class (height).
* Both ISO/R2 and ISO/R3 can only be fitted in the most forward position of the front passenger seat.
* ISOFIX child restraint size classes and attachment
A - ISO/F3: Full-size forward-facing child restraints (height 720 mm) B - ISO/F2: Reduced-size forward-facing child restraints (height 650 mm) B1 - ISO/F2X: Reduced-size forward-facing child restraints, second version of backrest shape (height 650 mm) C - ISO/R3: Full-size rear-facing child restraints
D - ISO/R2: Reduced-size rear-facing child restraints E - ISO/R1: Infant rear-facing child restraints F - ISO/L1: Left-side-facing child restraints (portable baby bed)
G - ISO/L2: Right-side-facing child restraints (portable baby bed)
3-door, 4-door

IUF = Suitable for forward-facing ISOFIX child restraint systems of the universal category approved for use in this weight group.
X = ISOFIX position not suitable for the ISOFIX child restraint in this weight group and/or this size class (height).
* Both ISO/R2 and ISO/R3 can only be fitted in the most forward position of the front passenger seat.
* ISOFIX child restraint size classes and attachment
A - ISO/F3: Full-size forward-facing child restraints (height 720 mm) B - ISO/F2: Reduced-size forward-facing child restraints (height 650 mm) B1 - ISO/F2X: Reduced-size forward-facing child restraints, second version of backrest shape (height 650 mm) C - ISO/R3: Full-size rear-facing child restraints
D - ISO/R2: Reduced-size rear-facing child restraints E - ISO/R1: Infant rear-facing child restraints F - ISO/L1: Left-side-facing child restraints (portable baby bed)
G - ISO/L2: Right-side-facing child restraints (portable baby bed)
Test yourself
A quick Kia Rio YB quiz: every answer comes with an explanation and a link to the manual page.